.main_bg {
    background: url("/img/lhj/main_bg.jpg") top center no-repeat;
    height: 1000px;
}

.main {
    width: 100%;
    height: 1000px;
    position: relative;
    margin: 0 auto;
}

.num_mask {
    background: url("/img/lhj/num_mask.png") /*tpa=http://www.jq22.com/demo/jquery-lhj-150421204139/images/num_mask.png*/ 0px 0px no-repeat;
    height: 184px;
    width: 740px;
    position: absolute;
    left: 50%;
    top: 340px;
    margin-left: -370px;
    z-index: 9;
}

.num_box {
    height: 450px;
    width: 750px;
    position: absolute;
    left: 50%;
    top: 340px;
    margin-left: -370px;
    z-index: 8;
    overflow: hidden;
    text-align: center;
}

.num {
    background: url("/img/lhj/num.png") /*tpa=http://www.jq22.com/demo/jquery-lhj-150421204139/images/num.png*/ top center repeat-y;
    width: 181px;
    height: 265px;
    float: left;
    margin-right: 6px;
}

.btn {
    background: url("/img/lhj/btn_start.png") /*tpa=http://www.jq22.com/demo/jquery-lhj-150421204139/images/btn_start.png*/ 0px 0px no-repeat;
    width: 264px;
    height: 89px;
    position: absolute;
    left: 50%;
    bottom: 50px;
    margin-left: -132px;
    cursor: pointer;
    clear: both;
}